ALWAYS:
• Store and handle jacks correctly.
• Inspect jacks before use and before placing into storage.
• Ensure the surface on which the jack is placed is level, even and capable of taking the imposed loads.
• Ensure the load is capable of withstanding the forces imposed by the jacking operation.
• Use packing capable of withstanding the imposed loads without crushing. Lift and lower in small stages using support
packing to minimise load falls or the load coming onto a single jack.
• Ensure the jack is positioned so that the load is applied to the jack in the correct plane.
NEVER:
• Obliquely load jacks.
• Raise the load higher than necessary.
• Over extend the jack.
• Leave a load supported solely on jacks.
• Reach under a load supported by jacks.
• Work or climb on a load supported by jacks.
Selecting the Correct Jack
Jacks may be hydraulic or mechanical in operation and are available in a range of capacities and designs. Select the jack
to be used and plan the lift taking the following into account:
Type of jack - hydraulic, ratchet, screw, journal.
Capacity, closed height, lifting height, overall dimensions.
Accessories - toe or claw attachment - screwed ram and locking collar - calibrated gauges for load/pressure measurement.
Packing to be used during the jacking operation and/or to support the load when raised.
Storing and Handling Jacks
Never return damaged jacks to storage. They should be clean and, where necessary, protected from corrosion.
Jacks should be stored upright with the ram, rack, screw or journal lowered so that it is protected from damage whilst in
store.
Operating levers, handles, tommy bars etc should be removed,clearly identified and stored separately.
Jacks should be handled with care.
Using Jacks Safely
Most jacking operations require the use of multiple jacks. Care is needed as it is not possible to raise or lower jacks in perfect unison. This results in an uneven loading condition with the load being transferred from one jack to another. It can be more hazardous when lowering as the jack being lowered transfers its share to the other jacks. The capacity of the jacks should be adequate to account for this. Steps should be taken to ensure the load is kept level within the limits of operation.
The following should also be taken into account:
Do not use defective jacks or inadequate packing etc.
Ensure the floor is capable of withstanding the imposed loads.
Where necessary use floor plates to spread the load over a wider area. Avoid hidden dangers such as buried cables, pipes
and ducts which may affect the load bearing capability of the floor. The surface on which the jacks is placed should be level and even allowing it to sit firmly without tilting or rocking. Use packers if necessary. The head of the jack should be in full, firm contact with the jacking point of the load. Use packers if necessary to prevent the head of the jack from slipping. Do not obliquely load the jack.Never raise a load higher than necessary. Special care is also necessary when lowering loads. Use a system of jacking and packing to ensure the load will not tilt or fall in the event of jack failure. Never over extend a jack.
Never leave a load supported on jacks. Use packing, screwed collars, trestles etc which are capable of withstanding the
imposed load without crushing. Never reach under, work or climb on a load supported by jacks. Always keep hands and toes clear.
In-service Inspection and Maintenance
Jacks should be cleaned to remove any dirt or debris paying particular attention to racks, screws, the area around top ram
seals etc. Hydraulic oil levels should be checked and the oil topped up or drained and replaced. Moving mechanical
components should be lubricated etc. Care is necessary in the case of ratchet jacks as excessive grease can cause the
holding pawl to stick or become retarded in operation allowing the rack to free fall thus dropping the load.
Regularly inspect jacks and, in the event of the following defects, refer the jack to a Competent Person for thorough
examination: jack fails to lift or lower; load slips or creeps down; damaged, cracked or distorted body; base cracked, distorted or does not sit solidly on the floor; operating lever/handle bent or cracked; toe or claw attachment cracked or distorted. In the case of hydraulic jacks: oil leaks; ram scored, nicked or distorted; release valve inoperative. In the case of mechanical jacks: rack teeth or screws chipped, worn or corroded; swivel head seized.
Specifications:
Model | HXSJ-1.5 | HXSJ-3 | HXSJ-5 | HXSJ-10 | HXSJ-16 | HXSJ-20 | HXSJ-25 | HXSJ-3Q | HXSJ-5Q | HXSJ-10Q | |
| Rated capacity/T | 1.5 | 3 | 5 | 10 | 16 | 20 | 25 | 3 | 5 | 10 | |
| Test load/KN | 18.4 | 36.8 | 61.3 | 122.5 | 196 | 245 | 306 | 36.8 | 61.3 | 122.5 | |
| Hand shake to lift full load/N | 140 | 196 | 235 | 431 | 580 | 650 | 750 | 196 | 235 | 431 | |
| Dimension/MM | A | 77 | 83 | 105 | 120 | 153 | 153 | 153 | 83 | 105 | 120 |
| B | 100 | 130 | 140 | 140 | 150 | 150 | 198 | 130 | 140 | 140 | |
| C | 605-905 | 720-1075 | 735-1065 | 795-1155 | 790-1105 | 840-1155 | 950-1360 | 720-1075 | 735-1065 | 795-1155 | |
| D | 55-355 | 55-410 | 60-390 | 70-430 | 90-405 | 90-405 | 110-520 | 55-410 | 60-390 | 70-430 | |
| E | 55 | 60 | 70 | 80 | 85 | 85 | 85 | 60 | 70 | 80 | |
| F | 40 | 45 | 68 | 73 | 90 | 90 | 90 | 45 | 68 | 73 | |
| G | 110 | 138 | 175 | 175 | 182 | 182 | 230 | 138 | 175 | 175 | |
| H | 225 | 285 | 285 | 330 | 360 | 360 | 360 | 285 | 285 | 330 | |
| K | 121 | 200 | 190 | 252 | 275 | 275 | 388 | 200 | 190 | 252 | |
| R | 119 | 140 | 155 | 186 | 210 | 224 | 200 | 140 | 155 | 185 | |
| S | 185 | 230 | 220 | 220 | 202 | 202 | 205 | 230 | 220 | 220 | |
| T | 126 | 126 | 126 | 250 | 250 | 250 | 250 | 126 | 126 | 250 | |
| Net weight/KG | 10.7 | 21.3 | 27 | 47 | 64.5 | 72 | 93 | 16.6 | 22.2 | 37 | |
Baoding Jiazhong Hoisting Machinery Plant. was founded in 1999 in Baoding. Its main development and production facility in Baoding, offers future-oriented solutions with chain systems and components for a wide range of applications.
We specializes in manufacturing standard heavy duty lifting chain (4MM -12MM), including European Standard chain for rigging, electric block chain and also undertake other special standard chain. Each lifting chain we produced was inspected by our experienced technician who had over 30 years research and producing lifting chain experience, and we also use strict quality control testing system to ensure the products' stability and durability.
Jiazhong' s primary purpose is produce heavy duty and more reliable lifting chain for lifting application to achieve superior performance and usage, withstand more abuse, high abrasion resistance, greater lifting load. Each bundle of raw materials come with alloy steel quality inspection report issued by the steelmaker, including the component analysis, production date, produced furnace number, and so on, to ensure the traceability of each batch of raw materials.
As the second largest chain manufacturer, our other hoisting machineries have a huge cost advantage. For hoisting, moving, pulling, driving and conveying, our Jiazhong lifting means, Jiazhong hoist chains, Jiazhong Chain block and Jiazhong Electric hoist are a guarantee of quality, innovation and safety.
In Tradition of Dynamic Innovation "that is in the tradition of a modern and dynamically growing family organization, the Jiazhong Group has officially been nominated as a Hidden Champion of the 21st Century because we are in our defined sectors worldwide leader in quality and technology.
SERVICE PHILOSOPHY
We are pleased you are interested in Jiazhong. We deliver comprehensive and innovative services to support the life cycle of your lifting equipment.
Our aim is to enable you to concentrate fully on your core business by giving you the certainty that your equipment operates with maximum reliability and efficiency.
Training
We offer a comprehensive range of training courses that qualify your staff in proper operation, service and inspection of our industrial cranes and their components.
Develop your staff through our training courses.
We offer a comprehensive range of training courses that qualify your staff in proper operation, service and inspection of our industrial cranes and their components. We leverage our expertise, customer focus and local knowledge to continuously develop and enhance our training courses.
Spare Parts
More than 15,000 different spare parts are ready to be shipped or collected direct from our distribution center. Parts manuals and operating instructions are available on Jiazhong Shop. Jiazhong parts for unsurpassed reliability and long service life.
Our spare parts reduce maintenance requirements and ensure reliability, long service life and continuous availability of our products. Jiazhong spare parts meet the highest quality requirements and are perfectly aligned to fit our customer's needs. Our quick and reliable logistics enable our products to be supplied efficiently and effectively worldwide.
Inspection
Jiazhong Services works closely with customers to create innovative solutions that drive costs down, track expected maintenance and increase productivity.
We offer the following key offerings: Inspection, Emergency Response, and Planned Maintenance
Jiazhong Services is a national leader in providing maintenance and product solutions for all major material handling equipment. We have proven expertise with effectively providing inspection services that are tailored to customer needs and application environment.
Repair
Our Planned Maintenance and Repair services enable customers to improve safety and productivity while reducing maintenance cost. From quarterly services on a few pieces of equipment to complete on-site maintenance partnerships to service hundreds of pieces of equipment, Jiazhong Services offers customized services that deliver results. For Planned Maintenance and Repair service information, contact us.
